IRSST - Institut de recherche Robert-Sauvé en santé et en sécurité du travail

Développement d’un nouveau dispositif d’échantillonnage afin de prélever de façon efficace et sécuritaire les aérosols de méthylène diphényle diisocyanate (MDI)


Isocyanates such as methylene diphenyl diisocyanate (MDI) are the class of substances that generate the most cases of occupational asthma. The polyurethanes used in many Quebec industries are the main source of exposure to occupational isocyanates.

On application of MDI-based products such as commercial and residential foam insulation, vapours and aerosols released into the air may expose workers to this sensitizer. To minimize MDI exposure in workers, environmental workplace monitoring should be implemented to map working areas containing residual methylene diphenyl diisocyanate and identify sectors and tasks requiring improvement.

Currently available workplace mappings are not as precise as they should be because filter and immersion sampling devices do not have the required capabilities.

The purpose of this activity is to develop a new sampling device to better determine workplace MDI aerosol levels and ensure safe and effective sampling.

Additional Information

Type: Project
Number: 2013-0056
Status: Completed
Year of completion: 2016